A device and method for resecting a distal portion of a femur comprises a distalcutting guide [98], a valgus guide [102], and a variable collet [10]. The distalcutting guide [98] is configured to overlie an anterior portion of the femur andcomprises a slot for guiding a cutting tool across a distal portion of the femur.The valgus guide [102] is configured to connect to the distal cutting guide [98].The valgus guide [102] is configured to align the slot of the distal cutting guide[98]at the proper varus/ valgus angle. The variable collet [10] is configured to attachto an intramedullary rod and the valgus guide [102]. The variable collet [10]comprises a port [30] for receiving the intramedullary rod. The port [30] is angularlyadjustable with respect to the valgus guide [102] such that adjusting the port[30] adjusts the varus/ valgus angle of the distal cutting guide [98].
